The method is presented for preparation metasilicate pentahydrate from residue after extracting magnesium from serpentine ore.以蛇纹石提镁残渣为原料,采用常压蒸馏法直接合成了六配位有机硅化物.Gold ore main type is auriferous quartz vein type.金矿床主要为含金硫化物...
We dowse oil and ore in South America for big companies.我们在南美洲为一些大公司探测石油和矿石。How many tons of ore can this machine crush in an hour?这机器每小时可以破碎多少吨矿石?The net profit amounts to 20 dollars per ton of ore.每吨矿砂的净利达20美元....
分发系统 ( RFDS ) RFDS是包括天线共享器 、 多路耦合器、洞合成仪和绝缘物.RF Distribution System ( RFDS ) The RFDS is consists of duplexers, receiver multicouplers, cavity combiners and isolators....
For a few brief minutes we forgot the anxiety and anguish.短短几分钟我们就忘记了焦虑与苦恼。"Oh, sorry. I forgot." — "Everyone forgets," the girl sighed.“哦，对不起，我忘了。”——“每个人都有忘事的时候，”那女孩叹着气说道。I just forgot. I've had a lot on my mind.我完...
The phosphate was deposited by the decay of marine microorganisms.海洋微生物腐烂后沉积形成磷酸盐。We make superphosphate by reacting rock phosphate with sulphuric acid.我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙.About two - thirds of the weight of phosphate...